iPhone Brightness Not Working in iOS 11? Fixed Here!

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Cedric Grantham Updated on Sep 19, 2018 to iOS & Mac Topics | How-to Articles

"I am pretty happy with my new iPhone 8, but the auto-brightness is NOT working properly! Kinda irritating as I have to manually set things every time I get into a dark room and then out, and into the sunlight etc. Can anyone help me to fix this issue and I need my iPhone auto-brightness works again! Thanks!"

Actually, many users have encountered various iPhone brightness problems after updating to iOS 11, including iPhone screen is too dark while the brightness level is all the way up, iPhone auto-brightness not working, and iPhone brightness won't go up. In this article, we will show you what to do if your iPhone brightness not working in iOS 11 with the situation above.

5 top tips to fix iPhone brightness not working in iOS 11

New iOS update may cause various system-related problems, such as iPhone keeps restarting, or iPhone alarm/notification/flashlight not working properly. Read on and use the effective solutions below to fix iPhone brightness not working after iOS 11.

1. Disable Reduce White Point

There is a setting called Reduce White Point on your iPhone that will reduce the intensity of bright colors on your device and then you will have a dim screen. To turn off Reduce White Point, you can

Go to "Settings" > "General" > "Accessibility" > "Display Accommodations" > turn off "Reduce White Point".

2. Restart your iPhone

Long-time no restarting will cause some unexpected issues on your iPhone, such as iPhone live wallpaper not working, iPhone screen recording not working or iPhone auto-brightness not working here.

Press and hold the "Sleep/Wake" button until the red slider shows up, then drag the "slider to power off". After 30 seconds later, press and hold the "Sleep/Wake" button again until the Apple logo appears on your iPhone.                             

3. Turn off Zoom

If the Zoom feature is on, you may get the dim screen on your iPhone. Therefore, turning off Zoon is one way deserving to try to fix this problem. 

Go to "Settings" > "General" > "Accessibility" > "Zoom" > turn it off.

4. Reset All Settings on iPhone

If your iPhone brightness not working in iOS 11 caused by some errors in iOS settings, you can try to fix this issue by resetting all settings on iPhone. And this operation won't cause any data loss, do it without worry.

Go to "Settings" > "General" > "Reset" > "Reset All Settings". Then all the settings on your iPhone will be wiped and you can set up your iPhone again to check the matter.


5. Restore your iPhone

If none of the above solutions can fix the iPhone brightness issue and your iPhone screen is still too dark or the auto-brightness also won't work, then you have to consider restoring your iPhone. When we talk about restore iPhone, usually, we can restore iPhone from iCloud or restore iPhone with iTunes backup. For better keep the data safe, we highly recommend you to restore iPhone with iTunes backup.

  • Connect your iPhone to your computer via a compatible USB cable.
  • Run iTunes and click on the iPhone device icon in the upper left corner of iTunes.
  • Click "Summary" under the device icon from the menu on the left side.
  • Tick the box for automatically backing up to "This computer". 
  • Click "Restore Backup". When the option appears, choose the latest iTunes backup and click "Restore". If you have encrypted the iTunes backup, you need to enter the password to unlock the iPhone backup.


How to keep your iPhone data safe when accidents happen

No matter you are using iPhone or iPad, the old iPhone or the latest iPhone 8/X, you may meet some unexpected issues from time to time, such as iPhone stuck on apple logo, iPhone AirDrop not working, iPhone such on recovery mode, iPhone physical broken or even virus attack. Then, how to protect your device data safe at this time? The answer will definitely be a regular iPhone data backup with a reliable and free iPhone manager. And EaseUS MobiMover Free is such a tool enables you to export almost all the iPhone files to the Windows computer with only one-click. And the supportable files are contacts, messages, notes, calendars, voice mails, books, Safari bookmarks & history, photos, videos, and audios.

Download and install EaseUS MobiMover to have a try!

 Download It for PC
Secure Download
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Step 1. Connect your iPhone to your PC running Windows 7/8/10 with a USB cable. Tap "Trust" on your iPhone screen if asked. Run EaseUS MobiMover and navigate to "Phone to PC". To back up iPhone photos, contacts, and other types of files, click "Next" to begin.

how to back up iPhone to PC - step 1

Step 2. You can back up iPhone photos, videos, movies, music, playlist, ringtones, books, contacts, messages, notes, voice memos, and more as the image shows below. You can transfer these items all at one time or respectively export a specified data type. MobiMover also supports you to customize the storage path for iPhone backup. Choose desired files and click "Transfer" to back up iPhone files to your PC right now

how to back up iPhone to PC - step 2

Step 3. Wait patiently until the transfer process ends. MobiMover will copy the iPhone files in a readable and accessible way so you can view, edit, or delete the data based on your own need.

how to back up iPhone to PC - step 3